/****************************************************************************

**

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtCore module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#include "qbasictimer.h"

#include "qcoreapplication.h"

#include "qabstracteventdispatcher.h"

QT_BEGIN_NAMESPACE

/*!

    \class QBasicTimer

    \brief The QBasicTimer class provides timer events for objects.

    \ingroup events

    This is a fast, lightweight, and low-level class used by Qt

    internally. We recommend using the higher-level QTimer class

    rather than this class if you want to use timers in your

    applications.

    To use this class, create a QBasicTimer, and call its start()

    function with a timeout interval and with a pointer to a QObject

    subclass. When the timer times out it will send a timer event to

    the QObject subclass. The timer can be stopped at any time using

    stop(). isActive() returns true for a timer that is running;

    i.e. it has been started, has not reached the timeout time, and

    has not been stopped. The timer's ID can be retrieved using

    timerId().

    The \l{widgets/wiggly}{Wiggly} example uses QBasicTimer to repaint

    a widget at regular intervals.

    \sa QTimer, QTimerEvent, QObject::timerEvent(), Timers, {Wiggly Example}

*/

/*!

    \fn QBasicTimer::QBasicTimer()

    Contructs a basic timer.

    \sa start()

*/

/*!

    \fn QBasicTimer::~QBasicTimer()

    Destroys the basic timer.

*/

/*!

    \fn bool QBasicTimer::isActive() const

    Returns true if the timer is running, has not yet timed

    out, and has not been stopped; otherwise returns false.

    \sa start() stop()

*/

/*!

    \fn int QBasicTimer::timerId() const

    Returns the timer's ID.

    \sa QTimerEvent::timerId()

*/

/*!

    \fn void QBasicTimer::start(int msec, QObject *object)

    Starts (or restarts) the timer with a \a msec milliseconds

    timeout.

    The given \a object will receive timer events.

    \sa stop() isActive() QObject::timerEvent()

 */

void QBasicTimer::start(int msec, QObject *obj)

{

   stop();

   if (obj)

       id = obj->startTimer(msec);

}

/*!

    Stops the timer.

    \sa start() isActive()

*/

void QBasicTimer::stop()

{

    if (id) {

        QAbstractEventDispatcher *eventDispatcher = QAbstractEventDispatcher::instance();

        if (eventDispatcher)

            eventDispatcher->unregisterTimer(id);

    }

    id = 0;

}

QT_END_NAMESPACE